257,614 research outputs found

    Still struggling to breathe: Another conversation on libraries and communities in crisis

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    In this lightning talk session, panelists will share brief statements regarding the roles of libraries in times of crises, including ideas such as navigating difficult conversations around anti-racism and other “controversial” topics; strategies for community resilience; the legal boundaries between free and hate speech; and how LIS education may play a role in preparing future LIS professionals for this type of crisis management. We also wish to interrogate the idea of the library as a place of neutrality. The remaining time will be spent facilitating an interactive discussion with the audience to strategize tangible action steps. Our initial work on this topic yielded several publications, which are listed below. Ironically, this work was not well received by the profession, but given the “supposed” racial reckoning that began after the death of George Floyd in the summer of 2020, we will reintroduce our work to the profession, which remains behind the curve on race relations, genuine and lasting inclusion, and anti racism. We continue our advocacy for ourselves, as BIPOC (black indigenous and people of color) faculty members, and for the future generations of the BIPOC information professionals we teach. Gibson, A. N., Chancellor, R. L., Cooke, N. A., Dahlen, S. P., Lee, S. A., & Shorish, Y. L. (2017). Libraries on the frontlines: Neutrality and social justice. Equality, Diversity and Inclusion: An International Journal. Cooke, N. A., & Sánchez, J. O. (2019). Getting it on the record: Faculty of color in library and information science. Journal of Education for Library and Information Science, 60(3), 169-181. Gibson, A. N., Chancellor, R. L., Cooke, N. A., Dahlen, S. P., Patin, B., & Shorish, Y. L. (2020). Struggling to breathe: COVID-19, protest and the LIS response. Equality, Diversity and Inclusion: An International Journal

    Two types of condition for the global stability of delayed sis epidemic models with nonlinear birth rate and disease induced death rate

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    We study global asymptotic stability for an SIS epidemic model with maturation delay proposed by K. Cooke, P. van den Driessche and X. Zou, Interaction of maturation delay and nonlinear birth in population and epidemic models, J. Math. Biol. 39(4) (1999) 332352. It is assumed that the population has a nonlinear birth term and disease causes death of infective individuals. By using a monotone iterative method, we establish sufficient conditions for the global stability of an endemic equilibrium when it exists dependently on the monotone property of the birth rate function. Based on the analysis, we further study the model with two specific birth rate functions B 1(N) = be -aN and B 3(N) = A/N + c, where N denotes the total population. For each model, we obtain the disease induced death rate which guarantees the global stability of the endemic equilibrium and this gives a positive answer for an open problem by X. Q. Zhao and X. Zou, Threshold dynamics in a delayed SIS epidemic model, J. Math. Anal. Appl. 257(2) (2001) 282291

    The prevalence, influential factors and mechanisms of relative age effects in UK Rugby League.

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    Relative age effects (RAEs), reflecting observed inequalities in participation and attainment as a result of annual age-grouping policies in youth sport, are common in most team sports. The aims of this study were to determine if and when RAEs become apparent in Rugby League, determine how influential variables (e.g., gender) lead and clarify whether player retention at junior representative levels can explain persistent RAEs. Player data were collected for the male and female community games ranging from Under 7s to Senior (N=15,060) levels, junior representative selections (i.e., Regional) and professional players (N=298). Chi-square analyses found significant (P<0.05) uneven birth date distributions beginning at the earliest stages of the game and throughout into senior professionals. In junior representative selections, 47.0% of Regional and 55.7% of National representative players were born in Quartile 1, with RAE risk increasing with performance level. Gender and nationality were also found to moderate RAE risk. When tracking representative juniors, over 50% were retained for similar competition the following season. Findings clearly demonstrate that RAEs exist throughout Rugby League with early selection, performance level and retention processes, appearing to be key contributing factors responsible for RAE persistence

    Book Reviews

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    The Gaping Pig: Literature and Metamorphosis (Irving Massey) (Reviewed by Charles Baxter, Wayne State University)Process of Speech: Puritan Religious Writing and Paradise Lost (Boyd M. Berry) (Reviewed by William E. Cain, The John Hopkins University)The Novels of Theodore Dreiser (Donald Pizer) (Reviewed by Linda W. Wagner, Michigan State University)A Glossary of Faulkner\u27s South (Calvin S. Brown) (Reviewed by Linda W. Wagner, Michigan State University)Marlowe, Tamburlaine, and Magic (James Robinson Howe) (Reviewed by Wayne Shumaker, University of California, Berkeley)Folklore and Fakelore: Essays Toward a Discipline of Folk Studies (Richard M. Dorson) (Reviewed by Michael J. Bell, Wayne State University)Lucan: An Introduction (Frederick M. Ahl) (Reviewed by John F. Makowski, Loyola University of Chicago)Hawthorne, Melville, and the Novel (Richard H. Brodhead) (Reviewed by John Bassett, Wayne State University)The Illustrator and the Book in England from 1790 to 1914 (Gordon N. Ray) (Reviewed by John R. Reed, )The Romantic Will (Michael G. Cooke) (Reviewed by John R. Reed,

    ïżŒMinimum target prices for production of direct acting antivirals and associated diagnostics to combat Hepatitis C Virus

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    Combinations of direct-acting antivirals (DAAs) can cure hepatitis C virus (HCV) in the majority of treatment-naïve patients. Mass treatment programs to cure HCV in developing countries are only feasible if the costs of treatment and laboratory diagnostics are very low. This analysis aimed to estimate minimum costs of DAA treatment and associated diagnostic monitoring. Clinical trials of HCV DAAs were reviewed to identify combinations with consistently high rates of sustained virological response across hepatitis C genotypes. For each DAA, molecular structures, doses, treatment duration, and components of retrosynthesis were used to estimate costs of large-scale, generic production. Manufacturing costs per gram of DAA were based upon treating at least 5 million patients per year and a 40% margin for formulation. Costs of diagnostic support were estimated based on published minimum prices of genotyping, HCV antigen tests plus full blood count/clinical chemistry tests. Predicted minimum costs for 12-week courses of combination DAAs with the most consistent efficacy results were: US122perpersonforsofosbuvir+daclatasvir;US122 per person for sofosbuvir+daclatasvir; US152 for sofosbuvir+ribavirin; US192forsofosbuvir+ledipasvir;andUS192 for sofosbuvir+ledipasvir; and US115 for MK-8742+MK-5172. Diagnostic testing costs were estimated at US90forgenotypingUS90 for genotyping US34 for two HCV antigen tests and US22fortwofullbloodcount/clinicalchemistrytests.Conclusions:MinimumcostsoftreatmentanddiagnosticstocurehepatitisCvirusinfectionwereestimatedatUS22 for two full blood count/clinical chemistry tests. Conclusions: Minimum costs of treatment and diagnostics to cure hepatitis C virus infection were estimated at US171-360 per person without genotyping or US$261-450 per person with genotyping. These cost estimates assume that existing large-scale treatment programs can be established. (Hepatology 2015;61:1174–1182

    Lessons learned from the two largest Galaxy morphological classification catalogues built by convolutional neural networks

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    ArtĂ­culo escrito por un elevado nĂșmero de autores, solo se referencian el que aparece en primer lugar, los autores pertenecientes a la UAM y el nombre del grupo de colaboraciĂłn, si lo hubiereThis is an electronic version of an article published in Monthly Notices of the Royal Astronomical Society. T. Y. Cheng, H. DomĂ­nguez SĂĄnchez, J. Vega-Ferrero, C. J. Conselice, M. Siudek, A. AragĂłn-Salamanca, M. Bernardi, R. Cooke, L. Ferreira, M. Huertas-Company , J. Krywult, A. Palmese , A. Pieres , A. A. Plazas MalagĂłn, A. Carnero Rosell , D. Gruen, D. Thomas , D. Bacon, D. Brooks, D. J. James, D. L. Hollowood, D. Friedel, E. Suchyta, E. SĂĄnchez, F. Menanteau, F. Paz-ChinchĂłn, G. GutiĂ©rrez, G. Tarle, I. Sevilla-Noarbe, I. Ferrero, J. Annis, J. Frieman, J. GarcĂ­a-Bellido, J. Mena-FernĂĄndez, K. Honscheid, K. Kuehn, L. N. da Costa, M. Gatti, M. Raveri, M. E. S. Pereira, M. RodrĂ­guez-Monroy, M. Smith, M. Carrasco Kind, M. Aguena, M. E. C. Swanson, N. Weaverdyck, P. Doel, R. Miquel, R. L. C. Ogando, R. A. Gruendl, S. Allam, S. R. Hinton, S. Dodelson, S. Bocquet, S. Desai, S. Everett and V. Scarpine in “Lessons learned from the two largest Galaxy morphological classification catalogues built by convolutional neural networks”. Monthly Notices of the Royal Astronomical Society 518.2 (2023): 2794-2809We compare the two largest galaxy morphology catalogues, which separate early- and late-type galaxies at intermediate redshift. The two catalogues were built by applying supervised deep learning (convolutional neural networks, CNNs) to the Dark Energy Survey data down to a magnitude limit of ∌21 mag. The methodologies used for the construction of the catalogues include differences such as the cutout sizes, the labels used for training, and the input to the CNN – monochromatic images versus gri-band normalized images. In addition, one catalogue is trained using bright galaxies observed with DES (i 19, the overall agreement is good (∌95 per cent), but is mostly driven by the large spiral fraction in the two catalogues. In contrast, the agreement within the elliptical population is not as good, especially at faint magnitudes. By studying the mismatched cases, we are able to identify lenticular galaxies (at least up to i < 19), which are difficult to distinguish using standard classification approaches. The synergy of both catalogues provides an unique opportunity to select a population of unusual galaxie

    Experiences of obesity among Saudi Arabian women contemplating bariatric surgery: An interpretative phenomenological analysis

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    This is the author's accepted manuscript. The final published article is available from the link below. Copyright @ 2013 The Authors.This study explored experiences of obesity, its perceived causes and motives for surgery, as described by seven Saudi women contemplating bariatric surgery. The women experienced cultural restrictions on their physical and social activities. Obesity embodied these restrictions, attracting stigma and moral failure. Traditional clothing, foods, hospitality norms and limited outdoor female activities were regarded as barriers to weight loss. Bariatric surgery was chosen to protect health and to access normative female roles. Some were encouraged by relatives who had undergone surgery. Opting for surgery reflected both participants’ sense of powerlessness to self-manage weight and the social acceptability, within their family context, of this biomedical approach

    Gyrotron experiments employing a field emission array cathode

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    The design and operation of a field emission array (FEA) cathode and the subsequent demonstration of the first FEA gyrotron are presented. Up to 10 mA from 30 000 tips was achieved reproducibly from each of ten chips in a gyrotron environment, namely, a vacuum 1 x 10(-8) mbar, -50 kV potential with multiple chip operation, The design parameters of the FEA gun were similar to those of a magnetron injection gun with an achievable electron beam current of 50-100 mA and measured power 720 W cw. Coherent microwave radiation was detected in both TE(02) at 30.1 GHz and TE(03) at 43.6 GHz, with a starting current of 1 mA

    CP-FTMW spectrum of bromoperfluoroacetone

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    The microwave spectrum of the molecule bromoperfluoroacetone has been measured on a CP-FTMW spectrometer in the 6-18. The spectra is dense with approximately one transition every 5 MHz on average. Rotational constants, centrifugal distortion parameters, and nuclear quadrupole coupling constants will be discussed. Comparisons to the previously studied halogen analogues perfluoroacetone\footnote{J.-U. Grabow, N. Heineking, and W. Stahl, \textit{Z. Naturforsch.} \textbf{46a} (1991) 229.} and chloroperfluoroacetone\footnote{G. Kadiwar, C. T. Dewberry, G. S. Grubbs II and S. A. Cooke, Talk \textbf{RH11}, 65th^{\mathrm{th}} International Symposium on Molecular Spectroscopy (2010).} along with a family of previously studied halogenated acetone species will be discussed
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